chamberlain



D. H. CHAMBERLAIN.- HAND STAMP.

N0. 66,561. Patented July 9, 1867.

Walneases: flaezzaa r, 0/41? gutter gram gaunt? @ffitt.

DEXTER H. CHAMBERLAIN, OF WEST ROXBURY, ASSIGNOR TO NATHANIEL L. CHAMBERLAIN, OF BOSTON, MASSACHUSETTS.

Letters Patent No, 66,561, datea July 9, 1867.

IMPROVEMENT IN HAND-STAMPS.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, DEXTER H. CHAMBERLAIN, of West Roxbury, in the county of Norfolk, and State of Massachusetts, have invented a new and useful Improvement in Hand-Stamps, of which the following is a. full, clear, and exact description, ref'erence being had to the accompanying drawing, making a part of this specifica tion, and representing a perspective view of a hand-stamp containing my improvement.

My invention is designed as an improvement upon a hand-stamp for which apatent was'granted to me on January 22, 1867. One of the objections found in the above was the diificulty experienced in readily setting the large type-wheel which indicates the day of the month, the number to be imprinted being on the under side of the wheel and consequently out of sight, and in setting the type-wheel it requires time, close observation, and attention to bring the required number to its proper place. l

lhe object of my invention iste-overoom-e this difiiculty, and the invention consists in'forming on the side of the large type-wheel, either by impressing, engraving, or otherwise attaching, a series of figures corresponding in number to those on the circumference of the said wheel, but in such a relativc position to the latter that the number on the side of the wheel opposite to an indicator will determine the exact number on the typewheel to be printed. Thus the type-wheel can be readily set without any delay or uncertainty, rendering the operation easy, and efiecting it with greater dispatch than in the ordinary manner.

Referring to the drawing, A represents the base of the stamp, having an upright, A, at its rear end which supports the arm 0, the latter beingheld in an elevated position by means of a coiled spring, B. Two spindles are arranged within the central portion of the arm C, upon which the inking-ribbon k is wound. D is the cushion. All of theabove being constructed and operating as described in the patent previously referred to. The numbers of the days of a month are formed on the periphery of the wheel 6, which is arranged to rotate between the wheels on either side, which wheels are of smaller diameter than the wheel I and are designed to mark respectively the month and year. Upon the side of the wheel b is formed concentrically a series of numbers, in such a manner that when the required number on the periphery of the said wheel is in contact with the cushion, the same number will be indicated by a pointer attached in any convenient position to the main frame. The several type-wheels are held in position by means of spring-pins passing through the sides of the head 0 and entering holes in the sides of the wheels. By-reason of the enlarged diameter of the central wheel 6, a considerable space is left exposed on the sides of the same above or beyond the side wheels, which enables the numbers to be readily seen, and the position of the wheel I; can be quickly changed backwards or farwards several numbers, when necessary, without requiring/close inspection or careful adjustment.

I What I claim as new, and desire to secure by Letters Patent, is-

The type-Wheel?) having figures upon its sides, in combination with an indicator, when the said wheel is arranged between two wheels of smaller diameter, as and For the purpose specified.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

DEXTER H. CHAMBERLAIN.

Witnesses:

M. S. G. WILDE, DAVID KELLEBER. 

